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NCEP North American Regional Reanalysis (NARR)

The NCEP North American Regional Reanalysis products are on Eta 221 grid (32km) at 29 pressure levels. They were produced using Eta 32km/45-layer model. The input data includes all observations used in NCEP/NCAR Global Reanalysis project, and additional precipitation data, TOVS-1B radiances, profiler data, land surface and moisture data, etc. The output analyses are 3-hourly with additional 9 variables in the 3-hour forecasts to reflect accumulations or averages.

PERIODS:

1979-01-01 00:00 +0000 to 2006-08-25 21:00 +0000 (Entire dataset)

Period details by subset

Period details by subset:
1979-01-01 00:00 +0000 to 1982-01-01 03:00 +0000
1982-01-11 00:00 +0000 to 2006-08-25 21:00 +0000 (Vertical pressure level fields)
1982-01-01 00:00 +0000 to 2006-08-25 21:00 +0000 (Surface and flux fields)
1979-01-01 00:00 +0000 to 1979-12-31 21:00 +0000 (Vertical pressure level fields, multiple days in a single TAR file)

UPDATES:

Monthly (nominally)

VARIABLES:

Air Temperature	Albedo	Canopy Characteristics	Cloud Amount/Frequency
Cloud Base Pressure	Cloud Liquid Water/Ice	Cloud Top Pressure	Dew Point Temperature
Evaporation	Freezing Rain	Geopotential Height	Heat Flux
Humidity	Hydrostatic Pressure	Longwave Radiation	Planetary Boundary Layer Height
Potential Temperature	Precipitable Water	Precipitation Amount	Precipitation Rate
Rain	Runoff	Sea Level Pressure	Shortwave Radiation
Skin Temperature	Snow	Snow Cover	Snow Depth
Snow Melt	Snow Water Equivalent	Soil Moisture/Water Content	Soil Temperature
Surface Air Temperature	Surface Pressure	Surface Winds	Tropopause
Upper Level Winds	Vegetation Cover	Vertical Wind Motion	Water Vapor
Wind Shear

GRIB parameter table

LEVELS:

See the detailed metadata for level information

TYPES:

Grid

COVERAGE:

Longitude Range: Westernmost=148.64E Easternmost=2.568W
Latitude Range: Southernmost=0.897N Northernmost=85.333N

Detailed coverage information

Detailed coverage information:
32.463km x 32.463km (at 50N) oriented 107W (349x277 Lambert Conformal starting at 1N,145.5W)
32.463km x 32.463km (at 50N) oriented 107W (349x277 Lambert Conformal starting at 1N,145.5W) (Surface and flux fields)
32.463km x 32.463km (at 50N) oriented 107W (349x277 Lambert Conformal starting at 1N,145.5W) (Vertical pressure level fields)
32.463km x 32.463km (at 50N) oriented 107W (349x277 Lambert Conformal starting at 1N,145.5W) (Vertical pressure level fields, multiple days in a single TAR file)

SOURCES:

DOC/NOAA/NWS/NCEP

National Centers for Environmental Prediction, National Weather Service, NOAA, U.S. Department of Commerce

PUBLICATIONS:

Recommended acknowledgement for this dataset:
"The data for this study are from the Research Data Archive (RDA) which is maintained by the Computational and Information Systems Laboratory (CISL) at the National Center for Atmospheric Research (NCAR). NCAR is sponsored by the National Science Foundation (NSF). The original data are available from the RDA (http://dss.ucar.edu) in dataset number ds608.0."

VOLUME:

16308.51 GBytes (Entire dataset)

Volume details by subset

Volume details by subset:
Vertical pressure level fields: 66.62 MBytes
Vertical pressure level fields, multiple days in a single TAR file: 3145.84 GBytes
Surface and flux fields: 4248.61 GBytes

DATA FORMATS:

WMO GRIB1

MORE DETAILS:

View more details for this dataset, including dataset citation, data contributors, and other detailed metadata

CONTACT:

For assistance with this dataset, please contact Chi-Fan Shih (303-497-1833) . If the specialist is unavailable, please contact Data Help.

DATA ACCESS:

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